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If a satellite of mass m is revolving ar...

If a satellite of mass m is revolving around the earth with distance r from centre, then total energy is

A

`-(GMm)/r`

B

`-(2GMm)/r`

C

`-(GMm)/(2r)`

D

`+(GMm)/r`

Text Solution

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The correct Answer is:
C
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Knowledge Check

  • An artificial satellite moving in a circular orbit at a distance h from the centre of the earth has a total energy E_(0) . Its potential energy is

    A
    `-E_(0)`
    B
    `1.5E_(0)`
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  • If an earth satellite of mass m orbiting at a distance 2 R from the centre of earth has to be transferred into the orbit of radius 3R, the amount of energy required is (R = radius of earth)

    A
    mgR
    B
    `(mgR)/(3)`
    C
    `(mgR)/(2)`
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  • A satellite A of mass m is at a distance of r from the centre of the earth. Another satellite B of mass 2 m is at distance of 2r from the earth's cente. Their time periods are in the ratio of

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    `1 : 2 `
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    C
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